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Debt Management

Debt Avalanche vs. Debt Snowball Comparison Calculator

See which strategy can reduce your debt faster and potentially lower total interest costs.

Pick Your Best Debt Strategy

Estimate months to payoff and total interest for both methods side by side.

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What this calculator does

The debt avalanche and debt snowball are two popular debt repayment strategies. Avalanche prioritizes highest-interest debt first (mathematically optimal). Snowball prioritizes smallest balance first (psychologically motivating). This calculator compares both strategies side-by-side.

How it works

You input multiple debts with balances, interest rates, and minimum payments, plus extra monthly funds available. The calculator simulates both strategies, showing payoff order, timeline, and total interest paid for each. It reveals exactly how much the avalanche saves versus the snowball.

Formula

Both methods: Pay minimums on all debts, apply extra payment to target debt. Avalanche Target = Debt with highest APR. Snowball Target = Debt with smallest balance. Interest Savings = Snowball Total Interest − Avalanche Total Interest.

Tips for using this calculator

  • Avalanche saves money; snowball builds momentum—choose based on your motivation style
  • The difference matters most with large rate variations between debts
  • Regardless of method, any consistent extra payment accelerates payoff
  • Consider a hybrid: start with one small debt for quick wins, then switch to avalanche
  • Celebrate each payoff to maintain motivation

Frequently asked questions

How much more does avalanche save?

Savings depend on debt sizes and rate differences. With significant rate variation (5% vs 25%), avalanche might save thousands. With similar rates, savings are minimal. The calculator shows your specific savings.

Why would anyone choose snowball if avalanche saves more?

Behavioral research shows people often need psychological wins to stay motivated. Paying off a small debt quickly creates momentum. For some, sticking with a slightly less optimal plan beats abandoning the optimal plan.

Can I switch methods mid-payoff?

Absolutely. Many people start with snowball for quick wins, then switch to avalanche once motivated. The best strategy is the one you'll actually follow.